As you can see, the shader is broken up into different SSS layers ('Shallow Scatter', 'Mid Scatter' and 'Deep Scatter'), each one with its own scattering radius, color, and weighting factor. There are also two separate specular/reflection layers.

In order to render Skin (SSS) across multiple objects you must use SSS Set Name.

The Skin shader can also be used to create a wide variety of materials such as wax, clay, marble, milk and plastics. Below are some more examples of different materials that can also be achieved with the Skin shader using different presets. Click on the images below to view the Skin shader settings: